How are MongoDB documents displayed and stored?

MongoDB documents are displayed in JSON format and stored in BSON format. JSON (JavaScript Object Notation) is a text-based format that is easy for humans to read and write, which makes it an ideal way to represent data in a way that is intuitive for developers and users working with the database.

BSON (Binary JSON), on the other hand, is a binary representation of JSON-like documents. It is designed to be efficient in terms of storage and to support more data types than JSON, such as dates and binary data. BSON maintains the structured format of JSON while allowing for additional features, which is why it's used for storage in MongoDB.

This distinction is crucial as it reflects MongoDB's approach to data management, balancing human readability with machine efficiency. JSON's format facilitates easy access and manipulation of data, while BSON optimizes storage and performance during database operations. Other answer choices do not accurately reflect this combination of display and storage formats used by MongoDB.